优快钻井配套技术在希50-54井应用实践

Application Practice of Optimized and Fast Drilling Comprehensive Techniques in Xi 50-54 Well

摘要:

针对海塔地质特点和钻井难点，开展钻井技术研究和现场试验，制定了切实可行的钻井提速方案，较好地解决了上部地层易塌、中部地层易斜、下部地层硬造成的相关钻井技术难点，实现了优快钻井的目标，为增储上产提供了强有力的保障。以希50-54井为例，从技术应用思路和应用效果两方面出发，深入分析井身结构优化、钻头及参数优选、复合钻井等几大海塔优快钻井配套技术在现场实际中的应用情况，实践表明机械钻速得到大幅度提高，钻井周期明显缩短，效果显著。

关键词:优快钻井;复合钻井;井身结构;钻头;海塔探区;希50-54井

Abstract:

According to geological characteristics and drilling difficulties in Haita district, drilling technical study and field test were made for drilling speed-rising plan. Technical difficulties caused by collapsing of upper-part formation, easy deviation in mid-part formation and hard bottom part formation were solved with the optimized and fast drilling realized. The paper analyzed the field application in borehole structural optimization, optical selection on drilling bit and parameters and compound drilling with the case of Xi 50-54 well, and it showed the great improvement on penetration rate and drilling period.

Key words:optimized and fast drilling; compound drilling; borehole structure; drilling bit; Haita exploration district; Xi 50-54 well